Display panel driving method and display device

Abstract

The present application discloses a driving method and a display device for a display panel. The display panel includes a plurality of pixels arranged in an array. The time for the display panel to display a frame of an image includes a pixel row driving phase for a plurality of rows of pixels. Each pixel row driving phase includes a scanning phase and a transition phase. The scanning phase is a phase for scanning a row of pixels, and the transition phase is a phase for stopping scanning the pixels. The driving method includes: obtaining a transition grayscale value in the scanning phase of the Nth row of pixels, where N is a positive integer; providing a first data voltage to the N+1th row of pixels according to the transition grayscale value in the transition phase; obtaining a first overdrive grayscale value corresponding to the transition grayscale value and the first target grayscale value of the N+1th row of pixels; and providing a second data voltage to the N+1th row of pixels according to the first overdrive grayscale value in the scanning phase of the N+1th row of pixels.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a driving method for a display panel and a display device. Background Art

[0002] Because the charging time of pixels in high-resolution, high-refresh-rate LCD panels is short, resulting in insufficient pixel charging time, existing LCD panels use overdrive technology to shorten the pixel charging response time and improve pixel charging efficiency.

[0003] However, the existing overdriving technology is prone to the problem of reduced color saturation due to insufficient pixel charging time, resulting in poor pixel charging effect. Summary of the Invention

[0004] Embodiments of the present application provide a display panel driving method and a display device, which can improve the charging effect of pixels.

[0005] On the one hand, an embodiment of the present application provides a driving method for a display panel, wherein the display panel includes a plurality of pixels arranged in an array, and the time for the display panel to display a frame of picture includes a pixel row driving stage of multiple rows of pixels, and each pixel row driving stage includes a scanning stage and a transition stage, the scanning stage is a stage for scanning a row of pixels, and the transition stage is a stage for stopping scanning the pixels, and the driving method includes: in the scanning stage of the Nth row of pixels, obtaining a transition grayscale value; in the transition stage, providing a first data voltage to the N+1th row of pixels according to the transition grayscale value; obtaining a first over-drive grayscale value corresponding to the transition grayscale value and the first target grayscale value of the N+1th row of pixels; and in the scanning stage of the N+1th row of pixels, providing a second data voltage to the N+1th row of pixels according to the first over-drive grayscale value.

[0006] Optionally, in some embodiments of the present application, in the scanning stage of the Nth row of pixels, the step of obtaining the transition grayscale value includes: obtaining the second target grayscale value of the Nth row of pixels and the first target grayscale value of the N+1th row of pixels, where N is a positive integer; and calculating the transition grayscale value corresponding to the second target grayscale value and the first target grayscale value.

[0007] Optionally, in some embodiments of the present application, the transition grayscale value is equal to an average grayscale value of the second target grayscale value and the first target grayscale value.

[0008] Optionally, in some embodiments of the present application, the step of calculating the transition grayscale value corresponding to the second target grayscale value and the first target grayscale value includes: calculating the sum of the absolute values ​​of multiple grayscale differences corresponding to each second target grayscale value and multiple first target grayscale values ​​according to a preset overdrive lookup table, the overdrive lookup table including the grayscale difference between the second overdrive grayscale value corresponding to the second target grayscale value and the first target grayscale value and the first target grayscale value; obtaining the minimum value of the sum of the absolute values ​​of the multiple grayscale differences; and obtaining the transition grayscale value according to the second target grayscale value corresponding to the minimum value.

[0009] Optionally, in some embodiments of the present application, the step of obtaining the first over-drive grayscale value corresponding to the transition grayscale value and the first target grayscale value includes: obtaining the grayscale difference corresponding to the transition grayscale value and the first target grayscale value according to the preset over-drive lookup table; calculating the sum of the first target grayscale value and the grayscale difference to obtain the first over-drive grayscale value.

[0010] Optionally, in some embodiments of the present application, the step of providing the first data voltage to the pixels in the N+1th row according to the transition grayscale value in the transition stage includes: obtaining the transition brightness value corresponding to the transition grayscale value according to a preset grayscale-brightness lookup table, the grayscale-brightness lookup table including the correspondence between grayscale and brightness; obtaining the first data voltage value corresponding to the transition brightness value according to a preset brightness-voltage lookup table, the brightness-voltage lookup table including the correspondence between brightness and voltage; in the transition stage, providing the first data voltage to the pixels in the N+1th row according to the first data voltage value.

[0011] Optionally, in some embodiments of the present application, the step of providing the second data voltage to the pixels in the N+1th row according to the first overdriving grayscale value during the scanning phase of the pixels in the N+1th row includes:

[0012] Obtaining a target brightness value corresponding to the first overdrive grayscale value according to a preset grayscale-brightness lookup table, wherein the grayscale-brightness lookup table includes a correspondence between grayscale and brightness;

[0013] Obtaining a second data voltage value corresponding to the target brightness value according to a preset brightness-voltage lookup table, wherein the brightness-voltage lookup table includes a correspondence between brightness and voltage;

[0014] During the scanning phase of the N+1th row of pixels, the second data voltage is provided to the N+1th row of pixels according to the second data voltage value.

[0015] Optionally, in some embodiments of the present application, during the scanning phase of the N+1th row of pixels, the time required for the N+1th row of pixels to switch from the transition grayscale value to the first overdrive grayscale value is less than or equal to half the duration of any of the scanning phases.

[0016] On the other hand, the present application provides a display device, comprising: a display panel and a driving circuit, the driving circuit being electrically connected to the display panel; wherein the display panel includes a plurality of pixels arranged in an array, the time for the display panel to display a frame of an image includes a pixel row driving phase for a plurality of rows of pixels, each of the pixel row driving phases including a scanning phase and a transition phase, the scanning phase being a phase for scanning a row of the pixels, the scanning phase being a phase for scanning a row of the pixels, the scanning phase being a phase for scanning a row of the pixels, and the transition phase being a phase for stopping scanning the pixels; the driving circuit comprising: a control module and a driving module, the control module being configured to obtain a transition grayscale value during the scanning phase for pixels in the Nth row, where N is a positive integer, and to obtain a first overdrive grayscale value corresponding to the transition grayscale value and a first target grayscale value for pixels in the N+1th row; the driving module being configured to provide a first data voltage to the pixels in the N+1th row according to the transition grayscale value during the transition phase, and to provide a second data voltage to the pixels in the N+1th row according to the first overdrive grayscale value during the scanning phase for the pixels in the N+1th row.

[0017] Optionally, in some embodiments of the present application, the control module is also used to output an enable signal to the driving module, and any pulse width of the enable signal is equal to the duration of any of the scanning stages, and the interval between two adjacent pulses in the enable signal is equal to the duration of any of the transition stages.

[0018] In the driving method and display device of the display panel provided in the present application, each pixel row driving phase is set to include a scanning phase and a transition phase, that is, a transition phase is set between the scanning phase corresponding to the pixels in the Nth row and the scanning phase corresponding to the pixels in the N+1th row, and in the transition phase, a first data voltage is provided to the pixels in the N+1th row according to the obtained transition grayscale value, wherein the difference between the transition grayscale value and the first target grayscale value of the pixels in the N+1th row is less than the difference between the second target grayscale value of the pixels in the Nth row and the first target grayscale value of the pixels in the N+1th row. At the same time, a first over-drive grayscale value corresponding to the transition grayscale value and the first target grayscale value of the pixels in the N+1th row is obtained, and in the scanning phase of the pixels in the N+1th row, a second data voltage is provided to the pixels in the N+1th row according to the first over-drive grayscale value, thereby shortening the charging response time of the pixels in the N+1th row to improve the charging rate of the pixels while ensuring the accuracy of the pixel charging, thereby improving the charging effect of the pixels. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of a display device provided by the present application;

[0020] Figure 2 is a waveform diagram of a driving signal of the display device provided in this application;

[0021] Figure 3 is a flow chart of a method for driving a display panel provided in this application;

[0022] Figure 4 yes Figure 3 Flowchart of step S10;

[0023] Figure 5 yes Figure 4 Flowchart of step S102;

[0024] Figure 6 is a schematic diagram of an overdrive lookup table used in the display panel driving method provided in this application;

[0025] Figure 7 yes Figure 3 Flowchart of step S20;

[0026] Figure 8 yes Figure 3 Flowchart of step S30;

[0027] Figure 9 yes Figure 3 Flowchart of step S40;

[0028] Figure 10 It is a schematic diagram of the voltage response curve of the display panel provided in this application. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The described technical solutions are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0030] like Figure 1 As shown, the present application provides a display device, including: a display panel 110 and a driving circuit 120 , wherein the driving circuit 120 is electrically connected to the display panel 110 .

[0031] Among them, the display panel 110 includes a plurality of pixels 111 arranged in an array. The time for the display panel to display a frame of an image includes a pixel row driving stage of multiple rows of pixels. Each pixel row driving stage includes a scanning stage and a transition stage. The scanning stage is the stage of scanning a row of pixels 111, and the transition stage is the stage of stopping scanning the pixels 111.

[0032] The driving circuit 120 includes a control module 121 and a driving module 122 .

[0033] Specifically, the control module 121 is used to obtain a transition grayscale value during the scanning phase of the Nth row of pixels, where N is a positive integer. The control module 121 is also used to obtain a first overdrive grayscale value corresponding to the transition grayscale value and the first target grayscale value of the N+1th row of pixels. The control module 121 includes a timing controller. That is, the timing controller can be used to calculate the second target grayscale value of the Nth row of pixels 111, and to obtain the first target grayscale value of the N+1th row of pixels 111, and to calculate the transition grayscale value corresponding to the second target grayscale value and the first target grayscale value, and to obtain the first overdrive grayscale value corresponding to the transition grayscale value and the first target grayscale value of the N+1th row of pixels.

[0034] Specifically, the timing controller is further configured to store an overdriving lookup table, which includes a correspondence between the second target grayscale value (transition grayscale value), the first target grayscale value, and the first overdriving grayscale value.

[0035] Specifically, the timing controller is further configured to output an output enable (OE) signal to the driver module 122. The width of any pulse of the enable signal is equal to the duration of any scanning phase, and the duration of the interval between two adjacent pulses in the enable signal is equal to the duration of any transition phase. Furthermore, the driving frequency during the scanning phase is equal to the pulse frequency of the enable signal. The driving frequency during the transition phase is equal to the frequency of the interval between two adjacent pulses in the enable signal.

[0036] Specifically, the driving module 122 is configured to provide a first data voltage to the N+1th row of pixels 111 according to the transition grayscale value during the transition phase, and to provide a second data voltage to the N+1th row of pixels 111 according to the first overdrive grayscale value during the scanning phase of the N+1th row of pixels 111. The driving module 122 includes a source driver chip 1221.

[0037] Specifically, the driving module 122 also includes a gate driving chip 1222, which is used to provide a high-voltage scanning signal to a corresponding row of pixels 111 in each scanning stage, so that the switching thin film transistors of multiple pixels 111 in the row of pixels 111 are turned on, so that the data signal can be input into the pixel circuit of the pixel 111, thereby realizing charging of the pixel 111.

[0038] Specifically, the display panel 100 further includes a plurality of scan lines G arranged at intervals along a first direction Y, and a plurality of data lines D arranged at intervals along a second direction X. The scan lines G are electrically connected to the gate driver chip 1222 for providing scan signals to the corresponding row pixels 111. The data lines D are electrically connected to the source driver chip 1221 for providing data signals to the corresponding column pixels 111.

[0039] like Figure 2 As shown, the scanning phase t01 and the transition phase t02 are sequentially executed within one frame time. The source driver chip provides data voltages Data to the pixels. At the beginning of the transition phase t02 (i.e., when the scanning of the Nth row of pixels ends), the first data voltage is provided to the N+1th row of pixels according to the transition grayscale value. And at the beginning of the scanning phase t01 of the N+1th row of pixels (i.e., when the scanning of the N+1th row of pixels begins), the second data voltage is provided to the N+1th row of pixels according to the first overdrive grayscale value.

[0040] Specifically, the gate driver chip provides a scan signal Gate to the pixels. For example, in the scan phase t01 of the Nth row of pixels, the gate driver chip provides a high-potential scan signal Gate N to the scan line electrically connected to the Nth row of pixels; in the scan phase t01 of the N+1th row of pixels, the gate driver chip provides a high-potential scan signal Gate N+1 to the scan line electrically connected to the N+1th row of pixels. In the scan phase t01 of the N+2th row of pixels, the gate driver chip provides a high-potential scan signal Gate N+2 to the scan line electrically connected to the N+2th row of pixels. In the scan phase t01 of the N+3th row of pixels, the gate driver chip provides a high-potential scan signal Gate N+3 to the scan line electrically connected to the N+3th row of pixels. In the scan phase t01 of the N+4th row of pixels, the gate driver chip provides a high-potential scan signal Gate N+4 to the scan line electrically connected to the N+4th row of pixels. Sequentially, in the scanning phase t01 of the N+Mth row of pixels, the gate driver chip provides a high-potential scanning signal Gate N+M to the scanning line electrically connected to the N+Mth row of pixels, where M is a positive integer greater than 4.

[0041] Specifically, the duration of the scanning phase t01 is equal to the pulse width of the output enable (OE) signal output by the timing controller. The driving frequency of the scanning phase t01 is equal to the pulse frequency of the enable signal. The duration of the transition phase t02 is equal to the interval between two adjacent pulses of the enable signal. The driving frequency of the transition phase t02 is equal to the frequency of the interval between two adjacent pulses of the enable signal.

[0042] Specifically, if the first target grayscale value of the pixels in the N+1th row is greater than the second target grayscale value of the pixels in the Nth row, the source driver chip provides a first data voltage to the pixels in the N+1th row during transition phase t02 (i.e., the data signal output by the source driver chip is transmitted to at least the position of the pixels in the N+1th row). Furthermore, during scanning phase t01 of the pixels in the N+1th row, the source driver chip provides a second data voltage to the pixels in the N+1th row. The initial data voltage provided by the source driver chip to the pixels in the Nth row is less than the first data voltage, and the first data voltage is less than the second data voltage.

[0043] Correspondingly, if the first target grayscale value of the pixels in the N+1th row is less than the second target grayscale value of the pixels in the Nth row, the source driver chip provides the first data voltage to the pixels in the N+1th row during the transition phase t02. Furthermore, during the scanning phase t01 of the pixels in the N+1th row, the source driver chip provides the second data voltage to the pixels in the N+1th row. The initial data voltage provided by the source driver chip to the pixels in the Nth row is greater than the first data voltage, and the first data voltage is greater than the second data voltage.

[0044] In the display device provided in the present application, each pixel row driving phase is set to include a scanning phase t01 and a transition phase t02, that is, a transition phase t02 is set between the scanning phase t01 corresponding to the pixels in the Nth row and the scanning phase t01 corresponding to the pixels in the N+1th row. In the transition phase t02, a first data voltage is provided to the pixels in the N+1th row according to the obtained transition grayscale value, wherein the difference between the transition grayscale value and the first target grayscale value of the pixels in the N+1th row is less than the difference between the second target grayscale value of the pixels in the Nth row and the first target grayscale value of the pixels in the N+1th row. At the same time, a first overdriving grayscale value corresponding to the transition grayscale value and the first target grayscale value of the pixels in the N+1th row is obtained, and in the scanning phase t01 of the pixels in the N+1th row, a second data voltage is provided to the pixels in the N+1th row according to the first overdriving grayscale value, thereby shortening the charging response time of the pixels in the N+1th row to improve the charging rate of the pixels while ensuring the accuracy of the pixel charging, thereby improving the charging effect of the pixels.

[0045] like Figure 3As shown, an embodiment of the present application provides a method for driving a display panel, wherein the display panel includes a plurality of pixels arranged in an array. The time for the display panel to display one frame of an image includes a pixel row driving phase for a plurality of rows of pixels. Each pixel row driving phase includes a scanning phase and a transition phase. The scanning phase is a phase for scanning a row of pixels, and the transition phase is a phase for stopping scanning of the pixels. The driving method includes:

[0046] S10 . In the scanning phase of the Nth row of pixels, a transition grayscale value is obtained, where N is a positive integer.

[0047] like Figure 4 As shown, step S10 includes the following sub-steps:

[0048] S101 , obtaining a second target grayscale value of pixels in the Nth row, and obtaining a first target grayscale value of pixels in the N+1th row, where N is a positive integer.

[0049] In the embodiments of the present application, the value of N includes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10... For example, when N is 1, the second target grayscale value of the pixels in the first row is obtained, and the first target grayscale value of the pixels in the second row is obtained. If the first target grayscale value is 0 or 255, and the second target grayscale value is any grayscale value between 0 and 255, then the overdrive grayscale value corresponding to the second target grayscale value and the first target grayscale value is equal to the first target grayscale value.

[0050] In an embodiment of the present application, the second target grayscale value is not equal to the first target grayscale value. If the second target grayscale value is equal to the first target grayscale value, then the overdrive grayscale value corresponding to the second target grayscale value and the first target grayscale value is equal to the first target grayscale value. This reduces the acquisition and calculation processes of the control module and reduces the power consumption of the display device.

[0051] In an embodiment of the present application, the difference between the second target grayscale value and the first target grayscale value is greater than or equal to a preset threshold value. The value of the preset threshold value is between 1 and 16, and the values ​​of the preset threshold value include 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, and 16. That is, if the difference between the second target grayscale value and the first target grayscale value is less than the preset threshold value, the overdrive grayscale value corresponding to the second target grayscale value and the first target grayscale value is equal to the first target grayscale value. For example, the second target grayscale value is 16 and the first target grayscale value is 32. At this time, the difference between the second target grayscale value and the first target grayscale value is equal to 16, and the overdrive grayscale value corresponding to the second target grayscale value and the first target grayscale value is equal to 32.

[0052] S102 : Calculate transition grayscale values ​​corresponding to the second target grayscale value and the first target grayscale value.

[0053] In one embodiment, the transition grayscale value is equal to the average grayscale value of the second target grayscale value and the first target grayscale value. That is, the average grayscale value of the second target grayscale value and the first target grayscale value is calculated to obtain the transition grayscale value corresponding to the second target grayscale value and the first target grayscale value. For example, if the second target grayscale value is 60 and the first target grayscale value is 120, the transition grayscale value corresponding to the second target grayscale value and the first target grayscale value is: (60 + 120) / 2 = 90.

[0054] As another embodiment, Figure 5 As shown, step S102 includes the following sub-steps:

[0055] S1021. Calculate the sum of the absolute values ​​of multiple grayscale differences corresponding to each second target grayscale value and multiple first target grayscale values ​​according to the overdrive lookup table, where the overdrive lookup table includes grayscale differences between the second overdrive grayscale value and the first target grayscale value corresponding to the second target grayscale value and the first target grayscale value.

[0056] In an embodiment of the present application, based on the second target grayscale values ​​of the plurality of binding points and the first target grayscale values ​​of the plurality of binding points, a grayscale difference between a second overdrive grayscale value and a first target grayscale value corresponding to the second target grayscale value of any binding point and the first target grayscale value of any binding point is obtained. For example, if the second target grayscale value is 96 and the first target grayscale value is 24, then the grayscale difference between the second overdrive grayscale value and the first target grayscale value corresponding to the second target grayscale value and the first target grayscale value is -6, i.e., the second overdrive grayscale value is 24-6=18.

[0057] In an embodiment of the present application, the sum of the absolute values ​​of the grayscale differences between the second target grayscale value of each binding point and the first target grayscale values ​​of the plurality of binding points is calculated. Figure 6 As shown, for example, the second target grayscale value is 112, and the sum of the absolute values ​​of the grayscale differences corresponding to the grayscale 112 and the first target grayscale values ​​of the plurality of binding points is 1+4+7+9+5+4+3=33.

[0058] S1022: Obtain a minimum value among the sums of the absolute values ​​of the plurality of grayscale differences.

[0059] In an embodiment of the present application, the sum of the absolute values ​​of the grayscale values ​​of multiple columns is obtained, and the minimum value is selected. For example, if the second target grayscale value is 112, the sum of the absolute values ​​of the grayscale differences between grayscale 112 and the first target grayscale values ​​of multiple binding points is 33. If the second target grayscale value is 80, the sum of the absolute values ​​of the grayscale differences between grayscale 80 and the first target grayscale values ​​of multiple binding points is 116. If the second target grayscale value is 144, the sum of the absolute values ​​of the grayscale differences between grayscale 144 and the first target grayscale values ​​of multiple binding points is 56. It can be seen that the minimum value is 33.

[0060] S1023 : Obtain a transition grayscale value according to the second target grayscale value corresponding to the minimum value.

[0061] For example, the minimum value is 33, and the grayscale differences corresponding to 33 are -1, -4, -7, -9, -5, 4, and 3. The second target grayscale value corresponding to these grayscale differences is 112. Therefore, the transition grayscale value is 112.

[0062] S20 . In a transition phase, providing a first data voltage to pixels in the N+1th row according to a transition grayscale value.

[0063] like Figure 7 As shown, step S20 includes the following sub-steps:

[0064] S201 : Acquire a transition brightness value corresponding to a transition grayscale value according to a preset grayscale-brightness lookup table, where the grayscale-brightness lookup table includes a correspondence between grayscale and brightness.

[0065] S202 : Acquire a first data voltage value corresponding to a transition brightness value according to a preset brightness-voltage lookup table, where the brightness-voltage lookup table includes a correspondence between brightness and voltage.

[0066] S203 . In a transition phase, provide a first data voltage to pixels in the N+1th row according to the first data voltage value.

[0067] In an embodiment of the present application, if the first target grayscale value of the pixels in the N+1th row is greater than the second target grayscale value of the pixels in the Nth row, the initial data voltage provided to the pixels in the Nth row during the scanning phase of the pixels in the Nth row is less than the first data voltage provided to the pixels in the N+1th row during the transition phase (that is, the data signal needs to be transmitted to at least the pixels in the N+1th row).

[0068] Correspondingly, if the first target grayscale value of the pixels in the N+1th row is less than the second target grayscale value of the pixels in the Nth row, the initial data voltage provided to the pixels in the Nth row during the scanning phase of the pixels in the Nth row is greater than the first data voltage provided to the pixels in the N+1th row during the transition phase.

[0069] S30 , obtaining a first overdriving grayscale value corresponding to the transition grayscale value and the first target grayscale value of pixels in the N+1th row.

[0070] like Figure 8 As shown, step S30 includes the following sub-steps:

[0071] S301 : Obtaining a grayscale difference between a transition grayscale value and a first target grayscale value according to a preset overdrive lookup table.

[0072] For example, if the transition grayscale value is 112 and the first target grayscale value is 32, then the grayscale difference between the transition grayscale value and the first target grayscale value is -9.

[0073] S302 : Calculate the sum of the first target grayscale value and the grayscale difference value to obtain a first overdrive grayscale value.

[0074] For example, the first target grayscale value is 32, and the grayscale difference value is −9. Then, the sum of the first target grayscale value and the grayscale difference value is 23, that is, the first overdriving grayscale value is 23.

[0075] S40 , in a scanning phase of the pixels in the N+1th row, providing a second data voltage to the pixels in the N+1th row according to the first overdriving grayscale value.

[0076] like Figure 9 As shown, step S40 includes the following sub-steps:

[0077] S401 : Obtain a target brightness value corresponding to a first overdrive grayscale value according to a preset grayscale-brightness lookup table, where the grayscale-brightness lookup table includes a correspondence between grayscale and brightness.

[0078] S402 : Obtain a second data voltage value corresponding to the target brightness value according to a preset brightness-voltage lookup table, where the brightness-voltage lookup table includes a correspondence between brightness and voltage.

[0079] S403 , in a scanning phase of the pixels in the N+1th row, providing a second data voltage to the pixels in the N+1th row according to the second data voltage value.

[0080] In an embodiment of the present application, if the first target grayscale value of the pixels in the N+1th row is greater than the second target grayscale value of the pixels in the Nth row, the initial data voltage provided to the pixels in the Nth row during the scanning phase of the pixels in the Nth row is less than the first data voltage provided to the pixels in the N+1th row during the transition phase (that is, the data signal needs to be transmitted to at least the pixels in the N+1th row), and the first data voltage provided to the pixels in the N+1th row during the transition phase is less than the second data voltage provided to the pixels in the N+1th row during the scanning phase of the pixels in the N+1th row.

[0081] Correspondingly, if the first target grayscale value of the pixels in the N+1th row is less than the second target grayscale value of the pixels in the Nth row, the initial data voltage provided to the pixels in the Nth row during the scanning phase of the pixels in the Nth row is greater than the first data voltage provided to the pixels in the N+1th row during the transition phase, and the first data voltage provided to the pixels in the N+1th row during the transition phase is greater than the second data voltage provided to the pixels in the N+1th row during the scanning phase of the pixels in the N+1th row.

[0082] like Figure 10As shown in the figure, the charging response curve of two adjacent rows of pixels (i.e., the change in data voltage Data over time Time) shows that during the scanning phase t01 of the pixels in the N+1th row, the time required for the pixels in the N+1th row to switch from the transition grayscale value to the first overdrive grayscale value is less than or equal to half the duration of any scanning phase t01. In other words, the time required to switch from the first data voltage data1 to the second data voltage data2 is less than or equal to half the duration of the scanning phase. This ensures the pixel charging rate and improves display issues caused by insufficient charging.

[0083] In the driving method of the display panel provided in the present application, each pixel row driving phase is set to include a scanning phase t01 and a transition phase t02, that is, a transition phase t02 is set between the scanning phase t01 corresponding to the pixels in the Nth row and the scanning phase t01 corresponding to the pixels in the N+1th row, and in the transition phase t02, a first data voltage is provided to the pixels in the N+1th row according to the obtained transition grayscale value, wherein the difference between the transition grayscale value and the first target grayscale value of the pixels in the N+1th row is less than the difference between the second target grayscale value of the pixels in the Nth row and the first target grayscale value of the pixels in the N+1th row, and at the same time, a first overdriving grayscale value corresponding to the transition grayscale value and the first target grayscale value of the pixels in the N+1th row is obtained, and in the scanning phase t01 of the pixels in the N+1th row, a second data voltage is provided to the pixels in the N+1th row according to the first overdriving grayscale value, thereby shortening the charging response time of the pixels in the N+1th row to improve the charging rate of the pixels while ensuring the accuracy of the pixel charging, thereby improving the charging effect of the pixels.

[0084] The above is a detailed introduction to a display panel driving method and a display device provided in the embodiments of the present application. The description of the above embodiments is only used to help understand the core idea of ​​the present application, and the above description should not be understood as limiting the scope of protection of the present application.

Claims

1. A method for driving a display panel, characterized in that: The display panel includes a plurality of pixels arranged in an array. The time for the display panel to display one frame of an image includes a pixel row driving phase for a plurality of rows of pixels. Each of the pixel row driving phases includes a scanning phase and a transition phase. The scanning phase is a phase for scanning a row of pixels, and the transition phase is a phase for stopping scanning a row of pixels. The driving method includes: In the scanning phase of the Nth row of pixels, a transition grayscale value is obtained, where N is a positive integer; In the transition phase, providing a first data voltage to the pixels in the N+1th row according to the transition grayscale value; Acquire a first overdrive grayscale value corresponding to the transition grayscale value and the first target grayscale value of the pixels in the N+1th row; During the scanning phase of the N+1th row of pixels, a second data voltage is provided to the N+1th row of pixels according to the first overdriving grayscale value.

2. The method for driving a display panel according to claim 1, wherein: In the scanning phase of the Nth row of pixels, the step of obtaining the transition grayscale value includes: Obtaining a second target grayscale value of the pixels in the Nth row and a first target grayscale value of the pixels in the N+1th row, where N is a positive integer; The transition grayscale value corresponding to the second target grayscale value and the first target grayscale value is calculated.

3. The method for driving a display panel according to claim 2, wherein: The transition grayscale value is equal to an average grayscale value of the second target grayscale value and the first target grayscale value.

4. The method for driving a display panel according to claim 2, wherein: The step of calculating the transition grayscale value corresponding to the second target grayscale value and the first target grayscale value includes: calculating, according to a preset overdrive lookup table, a sum of absolute values ​​of a plurality of grayscale differences corresponding to each second target grayscale value and a plurality of first target grayscale values, wherein the overdrive lookup table includes the grayscale differences between the second overdrive grayscale values ​​corresponding to the second target grayscale value and the first target grayscale value and the first target grayscale value; Obtaining a minimum value among the sums of the absolute values ​​of the plurality of grayscale differences; The transition grayscale value is obtained according to the second target grayscale value corresponding to the minimum value.

5. The method for driving a display panel according to claim 4, wherein: The step of obtaining a first overdrive grayscale value corresponding to the transition grayscale value and the first target grayscale value includes: Obtaining the grayscale difference corresponding to the transition grayscale value and the first target grayscale value according to the preset overdrive lookup table; A sum of the first target grayscale value and the grayscale difference is calculated to obtain the first overdrive grayscale value.

6. The method for driving a display panel according to claim 1, wherein: The step of providing the first data voltage to the pixels in the N+1th row according to the transition grayscale value during the transition phase includes: Obtaining a transition brightness value corresponding to the transition grayscale value according to a preset grayscale-brightness lookup table, wherein the grayscale-brightness lookup table includes a correspondence between grayscale and brightness; Obtaining a first data voltage value corresponding to the transition brightness value according to a preset brightness-voltage lookup table, wherein the brightness-voltage lookup table includes a correspondence between brightness and voltage; In the transition phase, the first data voltage is provided to the pixels in the (N+1)th row according to the first data voltage value.

7. The method for driving a display panel according to claim 1, wherein: The step of providing the second data voltage to the pixels in the N+1th row according to the first overdriving grayscale value during the scanning phase of the pixels in the N+1th row includes: Obtaining a target brightness value corresponding to the first overdrive grayscale value according to a preset grayscale-brightness lookup table, wherein the grayscale-brightness lookup table includes a correspondence between grayscale and brightness; Obtaining a second data voltage value corresponding to the target brightness value according to a preset brightness-voltage lookup table, wherein the brightness-voltage lookup table includes a correspondence between brightness and voltage; During the scanning phase of the N+1th row of pixels, the second data voltage is provided to the N+1th row of pixels according to the second data voltage value.

8. The method for driving a display panel according to claim 1, wherein: During the scanning phase of the N+1th row of pixels, the time required for the N+1th row of pixels to switch from the transition grayscale value to the first overdrive grayscale value is less than or equal to half the duration of any of the scanning phases.

9. A display device, characterized in that: include: A display panel comprising a plurality of pixels arranged in an array, wherein the time for the display panel to display one frame of an image includes a pixel row driving phase for a plurality of rows of pixels, each of the pixel row driving phases including a scanning phase and a transition phase, wherein the scanning phase is a phase for scanning a row of pixels, and the transition phase is a phase for stopping scanning of the pixels; A driving circuit, electrically connected to the display panel, comprising: a control module, configured to obtain a transition grayscale value during the scanning phase of the Nth row of pixels, where N is a positive integer, and to obtain a first overdrive grayscale value corresponding to the transition grayscale value and a first target grayscale value of the N+1th row of pixels; A driving module is used to provide a first data voltage to the pixels in the N+1th row according to the transition grayscale value during the transition phase, and to provide a second data voltage to the pixels in the N+1th row according to the first overdriving grayscale value during the scanning phase of the pixels in the N+1th row.

10. The display device according to claim 9, wherein: The control module is also used to output an enable signal to the driving module, wherein any pulse width of the enable signal is equal to the duration of any of the scanning phases, and the interval between two adjacent pulses in the enable signal is equal to the duration of any of the transition phases.

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